Imported Upstream version 1.4.16+git20130902

gl/m4/locale_h.m4

@@ -1,5 +1,5 @@
-# locale_h.m4 serial 10
-dnl Copyright (C) 2007, 2009-2010 Free Software Foundation, Inc.
+# locale_h.m4 serial 19
+dnl Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -10,16 +10,30 @@ AC_DEFUN([gl_LOCALE_H],
   dnl once only, before all statements that occur in other macros.
   AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
 
-  dnl Persuade glibc <locale.h> to define locale_t.
+  dnl Persuade glibc <locale.h> to define locale_t and the int_p_*, int_n_*
+  dnl members of 'struct lconv'.
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
   dnl If <stddef.h> is replaced, then <locale.h> must also be replaced.
   AC_REQUIRE([gl_STDDEF_H])
 
+  dnl Solaris 11 2011-11 defines the int_p_*, int_n_* members of 'struct lconv'
+  dnl only if _LCONV_C99 is defined.
+  AC_REQUIRE([AC_CANONICAL_HOST])
+  case "$host_os" in
+    solaris*)
+      AC_DEFINE([_LCONV_C99], [1], [Define to 1 on Solaris.])
+      ;;
+  esac
+
   AC_CACHE_CHECK([whether locale.h conforms to POSIX:2001],
     [gl_cv_header_locale_h_posix2001],
-    [AC_TRY_COMPILE([#include <locale.h>
-int x = LC_MESSAGES;], [],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <locale.h>
+            int x = LC_MESSAGES;
+            int y = sizeof (((struct lconv *) 0)->decimal_point);]],
+          [[]])],
        [gl_cv_header_locale_h_posix2001=yes],
        [gl_cv_header_locale_h_posix2001=no])])
 
@@ -28,12 +42,15 @@ int x = LC_MESSAGES;], [],
   if test $ac_cv_header_xlocale_h = yes; then
     HAVE_XLOCALE_H=1
     dnl Check whether use of locale_t requires inclusion of <xlocale.h>,
-    dnl e.g. on MacOS X 10.5. If <locale.h> does not define locale_t by
+    dnl e.g. on Mac OS X 10.5. If <locale.h> does not define locale_t by
     dnl itself, we assume that <xlocale.h> will do so.
     AC_CACHE_CHECK([whether locale.h defines locale_t],
       [gl_cv_header_locale_has_locale_t],
-      [AC_TRY_COMPILE([#include <locale.h>
-locale_t x;], [],
+      [AC_COMPILE_IFELSE(
+         [AC_LANG_PROGRAM(
+            [[#include <locale.h>
+              locale_t x;]],
+            [[]])],
          [gl_cv_header_locale_has_locale_t=yes],
          [gl_cv_header_locale_has_locale_t=no])
       ])
@@ -48,15 +65,29 @@ locale_t x;], [],
   fi
   AC_SUBST([HAVE_XLOCALE_H])
 
-  dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
-  gl_CHECK_NEXT_HEADERS([locale.h])
-
-  if test -n "$STDDEF_H" \
-     || test $gl_cv_header_locale_h_posix2001 = no \
-     || test $gl_cv_header_locale_h_needs_xlocale_h = yes; then
-    gl_REPLACE_LOCALE_H
+  dnl Check whether 'struct lconv' is complete.
+  dnl Bionic libc's 'struct lconv' is just a dummy.
+  dnl On OpenBSD 4.9, HP-UX 11, IRIX 6.5, OSF/1 5.1, Solaris 9, Cygwin 1.5.x,
+  dnl mingw, MSVC 9, it lacks the int_p_* and int_n_* members.
+  AC_CACHE_CHECK([whether struct lconv is properly defined],
+    [gl_cv_sys_struct_lconv_ok],
+    [AC_COMPILE_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <locale.h>
+            struct lconv l;
+            int x = sizeof (l.decimal_point);
+            int y = sizeof (l.int_p_cs_precedes);]],
+          [[]])],
+       [gl_cv_sys_struct_lconv_ok=yes],
+       [gl_cv_sys_struct_lconv_ok=no])
+    ])
+  if test $gl_cv_sys_struct_lconv_ok = no; then
+    REPLACE_STRUCT_LCONV=1
   fi
 
+  dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_NEXT_HEADERS([locale.h])
+
   dnl Check for declarations of anything we want to poison if the
   dnl corresponding gnulib module is not in use.
   gl_WARN_ON_USE_PREPARE([[#include <locale.h>
@@ -64,14 +95,8 @@ locale_t x;], [],
 #if HAVE_XLOCALE_H
 # include <xlocale.h>
 #endif
-   ]], [duplocale])
-])
-
-dnl Unconditionally enables the replacement of <locale.h>.
-AC_DEFUN([gl_REPLACE_LOCALE_H],
-[
-  dnl This is a no-op, because <locale.h> is always overridden.
-  :
+    ]],
+    [setlocale duplocale])
 ])
 
 AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
@@ -85,8 +110,13 @@ AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
 
 AC_DEFUN([gl_LOCALE_H_DEFAULTS],
 [
+  GNULIB_LOCALECONV=0; AC_SUBST([GNULIB_LOCALECONV])
+  GNULIB_SETLOCALE=0;  AC_SUBST([GNULIB_SETLOCALE])
   GNULIB_DUPLOCALE=0;  AC_SUBST([GNULIB_DUPLOCALE])
   dnl Assume proper GNU behavior unless another module says otherwise.
-  HAVE_DUPLOCALE=1;    AC_SUBST([HAVE_DUPLOCALE])
-  REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE])
+  HAVE_DUPLOCALE=1;       AC_SUBST([HAVE_DUPLOCALE])
+  REPLACE_LOCALECONV=0;   AC_SUBST([REPLACE_LOCALECONV])
+  REPLACE_SETLOCALE=0;    AC_SUBST([REPLACE_SETLOCALE])
+  REPLACE_DUPLOCALE=0;    AC_SUBST([REPLACE_DUPLOCALE])
+  REPLACE_STRUCT_LCONV=0; AC_SUBST([REPLACE_STRUCT_LCONV])
 ])